Making use of [...]/data/foaf

Hi,

I actually posted this as a support request, but they referred me to this community :P I would really appreciate any kind of help in this matter.

I was hoping that you could give me any advice on how to use the information provided on http://exampleusername.livejournal.com/data/foaf. I would like to use three sets of info on that page for a project I am working on, but none of the regular scripts seem to be able to handle the information provided.Or is there any other way that I can fetch and cache information like last time updated or number of members for a community? Pulling it from the profile page directly would cause quite a server load and I wouldn't know how to cache it that way.